Wear OS 4
Learn about behavior changes in Wear OS 4, and discover how you can further enhance your app's user experience.
Test your app
Explore how your app behaves on Wear OS 4. Install the latest stable system image of Wear OS 4 onto a physical device, or onto an emulated device in Android Studio.
What's in Wear OS 4
Power optimizations
Wear OS 4 introduces several updates and optimizations to help your app run as smoothly and efficiently as possible.
Watch Face Format
Bring your creative vision to life using either Watch Face Studio or the Watch Face Format.
Health Services improvements
Health Services offers improved permissions for background body sensors. On the emulator, test a wider variety of exercise types more seamlessly.
64-bit kernel and user space
Prepare your app for 64-bit only hardware and take advantage of the performance and security improvements introduced in Wear OS 4.
Latest news
Video: How to build high quality experiences on Wear OS
Learn how to set your app apart by adding surfaces and features to drive engagement.
Blog: Wear OS 4 is now stable and available on Google Pixel Watch 2
Learn about the added capabilities that Google Pixel Watch 2 and Wear OS 4 bring to users.